Case study of the effects of longwall-mining induced subsidence on shallow ground-water sources in the northern Appalachian coalfield. Report of Investigations/1988

Technical Report · Thu Dec 31 23:00:00 EST 1987

OSTI ID:6408820

Walker, J S

The Bureau of Mines monitored surface subsidence and water level fluctuations in 10 shallow observation wells above a series of four adjacent longwall panels in southwestern Pennsylvania, for about 4 yrs. The study attempted to correlate the changes in the water levels within the observation wells to the measured vertical and horizontal ground movements associated with subsidence. Results of the study indicate that the fluctuation of the water levels appears to be a function of the well location relative to the mine layout and the proximity of mining. Wells are generally unaffected by mining of a preceding panel unless they are located within the angle of draw for that panel. The water levels were found to be near the premining level before the ground was subject to maximum compressive strain. Nine of the ten wells investigated recovered to their premining water level after mining was completed.

• Research Organization: Bureau of Mines, Pittsburgh, PA (USA). Pittsburgh Research Center
• OSTI ID: 6408820
• Report Number(s): PB-90-268798/XAB; BUMINES-RI--9198
• Country of Publication: United States
• Language: English

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CAVING MINING
COAL MINING
COMPRESSION
ENVIRONMENTAL EFFECTS
FEDERAL REGION III
FLUCTUATIONS
GROUND SUBSIDENCE
GROUND WATER
HYDROGEN COMPOUNDS
LEVELS
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MINING
MONITORING
NATIONAL ORGANIZATIONS
NORTH AMERICA
OXYGEN COMPOUNDS
PENNSYLVANIA
SPACE DEPENDENCE
UNDERGROUND MINING
US BUREAU OF MINES
US DOI
US ORGANIZATIONS
USA
VARIATIONS
WATER
WATER TABLES
WATER WELLS
WELLS
WORKING FACES